New details on that cracked window at the millennium tower in San Francisco. 

The cracked glass is on the 36th floor. The discovery was made over the weekend. 

Inspectors have been combing through the building to figure out what exactly happened ever since.

The inside of the window is fine, but it’s the outside part that’s cracked and it’s getting out there.

That’s adding more time in this investigation.

Four days after a cracked window was discovered in 36B at the Millennium Tower in San Francisco, engineers from the Department of Building Inspection have been in and out of there.

“As soon as we heard about the crack, we immediately visited the unit and sent our onsite engineering team to secure the window from the inside and put extensions from the outside,” President of the Millennium Tower Homeowners Association Steven Mayer said.

Mayer says there have been broken windows in the past due to foreign objects blowing from the wind and construction debris, but this is the first time something like this happened.

“It appears we are leaning towards a product problem with the way it was manufactured and or installed,” Homeowners Association Attorney Thomas Miller said.

The 58-story building has been dubbed as the sinking, leaning, and now the cracking tower.

But we still don’t know if any of those are the leading cause of the latest problem.

“We don’t know that, so we’re looking at both aspects of it,” Miller said. “Our structural engineer that did look at it did not think it was a structural problem, but it could be related to any one of those causes.”

The window is currently sealed.

“That window from the outside is contained with a silicone sealant, so it is stable and there’s no likelihood of any piece of it falling out at the moment,” Miller said.

And outside the building is a pedestrian barricade beneath the unit on the 36th floor.

The building is taking extra safety precautions to find out how the window cracked in the first place.

“The building itself is a fantastic building,” Mayer said. “We got a thousand people living there and they look forward to quieter times.”

The building is required to submit an engineering report to the city by Friday.

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